Meditation, Swift is standing out to me more after some digging because it is the only swift action IP granting idea out of all of the ideas at any level.
Yeah, that's intentional. Swift Meditation isn't supposed to interfere with other IP generation, only with other swift actions like items and a few spell-like ideas. I didn't mention it before, but actually the main thing it interferes with is the feat Thought on the Run. It's a significant drawback - you're giving up your ability to both move and express 2 ideas that turn. Ditto for other swift-action alternatives to TotR, like Travel Devotion.
Being and Time - What happens if you reduce someone's level to 0, effectively de-aging them to before they were born? Making it similar to the "dying of old age" language would make sense from a mechanical perspective.
Good point. I'll add that.
Epiphany - If it's at the bottom of your deck and you draw and use it before reshuffling your deck does it become the only card in your deck?
Yup. I'll add a sentence clarifying that. Though you won't usually get the chance, since you rarely draw the last card in your deck as the last card in your hand.
This is a general rule of deck-building games: an empty deck is a valid state. You can put cards on top of it, you can shuffle it (which has no effect of course), and you can put cards on bottom of it (which is the same as on top). The only thing that causes an issue is drawing from it - that's why your discard pile gets shuffled and becomes your deck any time you need to do that.
Making a Call - I don't know how I feel about this one. It feels super meta.
It's designed to be a tangible benefit for the Strategist knowing the order of cards in her deck. It synergizes well with Turnabout, Cogitation, Thinking Ahead, Perfect Information, and Bring to Mind. Or if you don't have any of those, it's a fun last-resort gamble.
Recreate from Memory also feels meta and super annoying to track.
You mean to track which spells you've seen before? I'll probably remove that line. DMs usually impose that kind of rule themselves anyway - for instance, restricting Polymorph forms to monsters the player knows in-character. I don't see a pressing need to require it for all campaigns.
Tunnel Vision is blocked by metal so now I want to use it to help with mining.
Not gonna find a whole lot with only a round/level duration, but sure.